CN104195320A - Inner hood of high-temperature hood type furnace for oriented silicon steel - Google Patents
Inner hood of high-temperature hood type furnace for oriented silicon steel Download PDFInfo
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- CN104195320A CN104195320A CN201410449042.3A CN201410449042A CN104195320A CN 104195320 A CN104195320 A CN 104195320A CN 201410449042 A CN201410449042 A CN 201410449042A CN 104195320 A CN104195320 A CN 104195320A
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- inner cover
- type furnace
- high temperature
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Abstract
The invention discloses an inner hood of a high-temperature hood type furnace for oriented silicon steel. The inner hood comprises an inner hood body (1) and an inner hood top cover (2) which is positioned on the top of the inner hood body (1), wherein the periphery of the top of the inner hood body (1) is hermetically connected with the outer periphery of the inner hood top cover (2); the inner hood body (1) is provided with a deformation compensation section (3) which can deform to compensate the height of the inner hood body (1). The inner hood has the advantages that as the inner hood body is provided with the deformation compensation section which can deform to compensate the height of the inner hood body, the inner hood can deform appropriately at high temperature and high pressure, so that the thermal expansion and cold shrinkage of the inner hood are adapted when the inner hood is used, the situation that air leaks off to influence normal use because the inner hood is deformed and broken after swelling outwards as the stress inside the inner hood cannot be released is avoided, the high temperature resistance and high pressure resistance of the hood type furnace are effectively improved, the service life of the hood type furnace is prolonged, and the hood type furnace is good in sealing property and is safe and reliable.
Description
Technical field
The present invention relates to a kind of oriented silicon steel high temperature bell-type furnace supplementary unit, relate in particular to oriented silicon steel high temperature bell-type furnace inner cover.
Background technology
In oriented silicon steel production process, need in high temperature bell-type furnace, carry out high temperature annealing; annealing temperature is up to 1200 DEG C of left and right; and body of heater inside need to pass into different gas as protective atmosphere in the different steps of heating; remove on the one hand steel strip surface and apply the crystal water in magnesium oxide, form on the other hand Magnesium Silicate q-agent bottom.High temperature bell-type furnace generally comprises outer cover and inner cover two portions; existing high temperature bell-type furnace body of heater mostly is smooth round shape shape surface, and under high temperature, huge thermal stresses is born in bonnet inside; these stress discharge nowhere; finally cause inner cover to bulge, deform, when serious, also can cause inner cover to break; internal protection atmosphere is overflowed; air enters, and causes steel strip surface oxidation rubescent, finally affects quality product.
In addition, owing to needing to pass into inflammable and explosive shielding gas in high-temperature annealing furnace, its sealing effectiveness and security requirement are very high.The sealing method that oriented silicon steel high temperature bell-type furnace adopts is all the time: husky sealing for inner cover, and outer cover adopts husky, water double seal, and between inside and outside cover, protective atmosphere communicates substantially, and bell furnace twice sand seal adds atmosphere outside one water seal and stove and thoroughly completely cuts off like this.Although adopt sand, water double seal sealing effectiveness to ensure to some extent, due to complicated structure, and owing to requiring very high to the control of moisture content in high temperature bell-type furnace---require the DP value in shielding gas in stove bearing below 15 degree.If exist a small amount of water vapour all to carry out secondary recrystallization and the carrying out that generates good surperficial Magnesium Silicate q-agent insulating bottom layer and react by affecting oriented silicon steel in high temperature bell-type furnace in stove.Because the annealing temperature of high temperature bell-type furnace is more than 1000 DEG C, so being positioned at the water of furnace shell inner side in water sealed tank will flash to water vapour and enter stove under this high temperature, just must extend the annealing cycle of high temperature annealing in order to get rid of these additional water vapour, improve production cost; And can have influence on magnetic and the surface quality of oriented silicon steel, and when serious, also can make oriented silicon steel be oxidized, have influence on the quality of product.
Summary of the invention
The invention provides oriented silicon steel high temperature bell-type furnace inner cover, it has overcome the existing deficiency of oriented silicon steel high temperature bell-type furnace inner cover in background technology.
The technical scheme adopting that the present invention solves its technical problem is:
Oriented silicon steel high temperature bell-type furnace inner cover, comprise interior cover body (1) and be positioned at the inner cover top cover (2) at cover body (1) top, described interior cover body (1) top periphery is together with inner cover top cover (2) outer peripheral edges fixed seal connection; Described interior cover body (1) is provided with one section deformation-compensated section (3) that can be out of shape to compensate interior cover body (1) height.
Among one embodiment: described inner cover top cover (2) is one-body molded or welding fabrication with interior cover body (1).
Among one embodiment: described deformation-compensated section (3) are at least provided with one section of annular outwardly projecting portion, described interior cover body (1) is cylindrical and deformation-compensated section of (3) consistency of thickness.
Among one embodiment: described outwardly projecting portion number is multistage, described multistage outwardly projecting portion arranges along the even interval of interior cover body (1) short transverse, between every adjacent two outwardly projecting portions, form concave section, described outwardly projecting portion coordinates and makes deformation-compensated section (3) form into the corrugated striped of multiple annulars with concave section.
Among one embodiment: described outwardly projecting portion height and concave section height equate.
Among one embodiment: described outwardly projecting portion camber convex corner shape and number are multistage, described multistage outwardly projecting portion arranges along the even interval of interior cover body (1) short transverse, and the spacing H1 between every adjacent two outwardly projecting portions is 3-5 times of an outwardly projecting portion height H 2.
Among one embodiment: described interior cover body (1) bottom is also installed with inner cover base (4), and described inner cover base (4) is provided with tightness system (5).
Among one embodiment: described inner cover base (4) longitudinal cross-section is inverse-T-shaped, and described inner cover base (4) comprises the base plate (41) of bottom and is installed in the ring-shaped step (42) on base plate (41) top.
Among one embodiment: described tightness system (5) comprises the some bolt mounting holes (51) and the sealing-ring slot to make way (52) that are positioned on base plate (41), described sealing-ring slot to make way (52) correspondence is positioned under ring-shaped step (42), ring-shaped step (42) inside on described sealing-ring slot to make way (52) top is also provided with cooling trough (6), installing sealing-ring in sealing-ring slot to make way (52).
Among one embodiment: described cooling trough (6) top is adjacent is provided with cold water inlet (61) and hot water outlet pipe (62).
The technical program is compared with background technology, and its tool has the following advantages:
(1) interior cover body is provided with one section deformation-compensated section, deformation-compensated section can be out of shape to compensate inner cover body height, in guarantee, cover under High Temperature High Pressure and can deform in right amount, thereby adapt to expanding with heat and contract with cold of inner cover when work, avoid inner cover internal stress to discharge nowhere and cause the distortion of inner cover external drum or the gas leakage causing of breaking, impact normally to use, thereby effectively improve the high temperature resistant and high-voltage resistance capability of bell furnace, extend its work-ing life, good seal performance, safe and reliable.
(2) deformation-compensated section becomes corrugated striped or protruding stupefied for being evenly arranged on arc on interior cover body, thereby make inner cover there is good elasticity, telescopicing performance is good, thereby can discharge the stress producing under a part of high temperature to a certain extent, prevents the high temperature deformation of stove inner cover or cracking.
(3) tradition adopts sand watertight construction, adopt sealing-ring to seal by coordinating with table, and pass through at silica gel sealing ring cooling trough setting up and down, adopt recirculated cooling water to carry out cooling to silica gel sealing ring, because silica gel sealing ring degree of deformation is good, sealing property also improves greatly, and also can prevent from adopting the high temperature annealing that sand water-lute causes time, water vapor enters, and affects quality product.
(4) the present invention is simple in structure, design ingenious, long service life, good seal performance, can be in large-scale application.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is first embodiment of the invention front view;
Fig. 2 is A part longitudinal sectional view in embodiment 1;
Fig. 3 is first embodiment of the invention vertical view;
Fig. 4 is second embodiment of the invention front view;
Fig. 5 is the present invention and table packaging assembly schematic diagram;
Fig. 6 is Fig. 5 part sectioned view of the present invention;
Label declaration: 1, interior cover body; 2, inner cover top cover; 3, deformation-compensated structure; 4, inner cover base; 41, base plate; 42, ring-shaped step; 5, tightness system; 51, bolt mounting holes; 52, sealing-ring slot to make way; 6, cooling trough; 61, cold water inlet; 62, hot water outlet pipe; 7, table; 8, silicone rubber O-ring; 9, steel band.
Embodiment
Embodiment mono-
Please refer to Fig. 1 to Fig. 3, oriented silicon steel high temperature bell-type furnace inner cover, comprises interior cover body 1 and the inner cover top cover 2 that is positioned at cover body 1 top, and described interior cover body 1 top periphery is together with the 2 outer peripheral edges fixed seal connections of inner cover top cover.The arc that described inner cover top cover 2 is evagination, one side can improve the intensity of inner cover, is convenient on the other hand heat and circulates, and improves heat utilization efficiency, is conducive to the homogeneity that steel band is heated.Interior cover body 1 is cylindrical and deformation-compensated section of 3 consistency of thickness.Described inner cover top cover 2 is one-body molded or welding fabrication with interior cover body 1.Described interior cover body 1 is provided with one section can be out of shape to compensate deformation-compensated section 3 of interior cover body 1 height.
Described deformation-compensated section 3 outwardly projecting portion that is provided with multistage annular, described outwardly projecting portion number is multistage, described multistage outwardly projecting portion arranges along the interior cover body 1 even interval of short transverse, between every adjacent two outwardly projecting portions, forms concave section, and described outwardly projecting portion height and concave section height equate.Described outwardly projecting portion coordinates and makes deformation-compensated section 3 corrugated striped that forms into multiple annulars with concave section, thereby makes interior cover body 1 have good elasticity, makes it that external drum distortion still can not occur under high temperature, high pressure, increases substantially the work-ing life of inner cover.
As preferred version of the present invention, described interior cover body 1 bottom is also installed with inner cover base 4, and described inner cover base 4 is provided with tightness system 5.Described inner cover base 4 longitudinal cross-sections are inverse-T-shaped, and described inner cover base 4 comprises the base plate 41 and the ring-shaped step 42 that is installed in base plate 41 tops of bottom.Described tightness system 5 comprises the some bolt mounting holes 51 and the sealing-ring slot to make way 52 that are positioned on base plate 41, described sealing-ring slot to make way 52 correspondences are positioned under ring-shaped step 42, ring-shaped step 42 inside on described sealing-ring slot to make way 52 tops are also provided with cooling trough 6, as shown in Figure 2.Described cooling trough 6 tops are adjacent is provided with cold water inlet 61 and hot water outlet pipe 62, as shown in Figure 3.
Embodiment bis-
Please refer to Fig. 4, the present embodiment is substantially the same manner as Example 1, difference is: described outwardly projecting portion camber convex corner shape and number are multistage, described multistage outwardly projecting portion arranges along the interior cover body 1 even interval of short transverse, and the spacing H1 between every adjacent two outwardly projecting portions is 3-5 times of an outwardly projecting portion height H 2.Arc in the present embodiment is protruding stupefied less, the axial non-deformability of stove inner cover is poor compared with embodiment 1, but the present embodiment manufacture craft is simple, cost is relatively low, the high-temperature annealing process inner cover that while can be used for high temperature annealing, temperature is lower, soaking time is shorter, can save production cost to a certain extent.
Installation method of the present invention is shown in Fig. 5 and Fig. 6, after steel band 9 shove charges, silicone rubber O-ring 8 is put into the sealing-ring slot to make way 52 of inner cover bottom, and form an annular recesses with the sealing-ring slot to make way on table 7 tops, can make the position of silicone rubber O-ring 8 keep stable, guarantee that between bell furnace inner cover and table 7, joint does not have space; Preferably, silicone rubber O-ring 8 diameter of sections can be slightly larger than the height of sealing-ring slot to make way 52 twices, thereby can ensure to make silicone rubber O-ring 8 and sealing-ring slot to make way 52 reach shrink-fit after inner cover 2 and table 7 are installed, and have fully ensured the sealing property of bonnet.Before intensification, recirculated cooling water is passed in cooling trough 6 by cold water inlet 61, on this cooling trough 6 and table, 7 cooling trough carries out comprehensive cooling to silicone rubber O-ring 8 simultaneously, thereby can prevent from damaging under silicone rubber O-ring 8 high temperature, the sealing property causing reduces, the work-ing life that also can improve silicone rubber O-ring 8.
In addition, some bolt mounting holes 51 that the base plate 41 on inner cover base 4 is provided with, can make inner cover realize tightening up by bolt with table 7 and be connected, thereby further ensure the sealing effectiveness of inner cover and table 7.Preferably, this bolt mounting holes 51 is slotted hole type, can be convenient to when bolt is installed align with the bolt mounting holes on table 7, thereby improve shove charge efficiency.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of doing according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (10)
1. oriented silicon steel high temperature bell-type furnace inner cover, comprise interior cover body (1) and be positioned at the inner cover top cover (2) at cover body (1) top, described interior cover body (1) top periphery is together with inner cover top cover (2) outer peripheral edges fixed seal connection; It is characterized in that: described interior cover body (1) is provided with one section deformation-compensated section (3) that can be out of shape to compensate interior cover body (1) height.
2. oriented silicon steel according to claim 1 high temperature bell-type furnace inner cover, is characterized in that: described inner cover top cover (2) is one-body molded or welding fabrication with interior cover body (1).
3. oriented silicon steel according to claim 1 high temperature bell-type furnace inner cover, it is characterized in that: described deformation-compensated section (3) are at least provided with one section of annular outwardly projecting portion, described interior cover body (1) is cylindrical and deformation-compensated section of (3) consistency of thickness.
4. oriented silicon steel according to claim 3 high temperature bell-type furnace inner cover, it is characterized in that: described outwardly projecting portion number is multistage, described multistage outwardly projecting portion arranges along the even interval of interior cover body (1) short transverse, between every adjacent two outwardly projecting portions, form concave section, described outwardly projecting portion coordinates and makes deformation-compensated section (3) form into the corrugated striped of multiple annulars with concave section.
5. oriented silicon steel according to claim 3 high temperature bell-type furnace inner cover, is characterized in that: described outwardly projecting portion height and concave section height equate.
6. oriented silicon steel according to claim 3 high temperature bell-type furnace inner cover, it is characterized in that: described outwardly projecting portion camber convex corner shape and number are multistage, described multistage outwardly projecting portion arranges along the even interval of interior cover body (1) short transverse, and the spacing H1 between every adjacent two outwardly projecting portions is 3-5 times of an outwardly projecting portion height H 2.
7. according to the oriented silicon steel high temperature bell-type furnace inner cover described in claim 1 to 6 any one claim, it is characterized in that: described interior cover body (1) bottom is also installed with inner cover base (4), and described inner cover base (4) is provided with tightness system (5).
8. oriented silicon steel according to claim 7 high temperature bell-type furnace inner cover, it is characterized in that: described inner cover base (4) longitudinal cross-section is inverse-T-shaped, and described inner cover base (4) comprises the base plate (41) of bottom and is installed in the ring-shaped step (42) on base plate (41) top.
9. oriented silicon steel according to claim 8 high temperature bell-type furnace inner cover, it is characterized in that: described tightness system (5) comprises the some bolt mounting holes (51) and the sealing-ring slot to make way (52) that are positioned on base plate (41), described sealing-ring slot to make way (52) correspondence is positioned under ring-shaped step (42), ring-shaped step (42) inside on described sealing-ring slot to make way (52) top is also provided with cooling trough (6), installing sealing-ring in sealing-ring slot to make way (52).
10. oriented silicon steel according to claim 9 high temperature bell-type furnace inner cover, is characterized in that: described cooling trough (6) top is adjacent is provided with cold water inlet (61) and hot water outlet pipe (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449042.3A CN104195320A (en) | 2014-09-04 | 2014-09-04 | Inner hood of high-temperature hood type furnace for oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410449042.3A CN104195320A (en) | 2014-09-04 | 2014-09-04 | Inner hood of high-temperature hood type furnace for oriented silicon steel |
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| Publication Number | Publication Date |
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| CN104195320A true CN104195320A (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410449042.3A Pending CN104195320A (en) | 2014-09-04 | 2014-09-04 | Inner hood of high-temperature hood type furnace for oriented silicon steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708473A (en) * | 2019-01-12 | 2019-05-03 | 赐宝新型薄板(江苏)有限公司 | A kind of sand seal furnace improving liner furnace and resistance band service life |
| CN112415143A (en) * | 2020-11-19 | 2021-02-26 | 无锡普天铁心股份有限公司 | Device for analyzing content of carbon and sulfur in oriented silicon steel |
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| CN2353764Y (en) * | 1998-10-22 | 1999-12-15 | 无锡市南洋化工机械厂 | Inner cover of cover-type annealing furnace |
| CN2701874Y (en) * | 2004-01-08 | 2005-05-25 | 攀枝花钢铁有限责任公司钢铁研究院 | Reticular corrugated inner cover for bell furnace |
| CN202610292U (en) * | 2012-04-28 | 2012-12-19 | 中冶南方(武汉)威仕工业炉有限公司 | Reinforced protective inner cover for high-temperature belts of bell-type furnace |
| CN204111831U (en) * | 2014-09-04 | 2015-01-21 | 新万鑫（福建）精密薄板有限公司 | A kind of oriented silicon steel high temperature bell-type furnace inner cover |
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2014
- 2014-09-04 CN CN201410449042.3A patent/CN104195320A/en active Pending
Patent Citations (4)
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| CN2353764Y (en) * | 1998-10-22 | 1999-12-15 | 无锡市南洋化工机械厂 | Inner cover of cover-type annealing furnace |
| CN2701874Y (en) * | 2004-01-08 | 2005-05-25 | 攀枝花钢铁有限责任公司钢铁研究院 | Reticular corrugated inner cover for bell furnace |
| CN202610292U (en) * | 2012-04-28 | 2012-12-19 | 中冶南方(武汉)威仕工业炉有限公司 | Reinforced protective inner cover for high-temperature belts of bell-type furnace |
| CN204111831U (en) * | 2014-09-04 | 2015-01-21 | 新万鑫（福建）精密薄板有限公司 | A kind of oriented silicon steel high temperature bell-type furnace inner cover |
Non-Patent Citations (2)
| Title |
|---|
| 中国机械工程学会热处理学会 编: "《热处理手册 第3卷 热处理设备和工辅材料 第4版》", 31 January 2008, article "罩式炉", pages: 183 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109708473A (en) * | 2019-01-12 | 2019-05-03 | 赐宝新型薄板(江苏)有限公司 | A kind of sand seal furnace improving liner furnace and resistance band service life |
| CN112415143A (en) * | 2020-11-19 | 2021-02-26 | 无锡普天铁心股份有限公司 | Device for analyzing content of carbon and sulfur in oriented silicon steel |
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Application publication date: 20141210 |
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